CVE-2021-4002

Katalog CVE

CVSS 4.4 · Medium EPSS 0,52%

Kerentanan Incomplete Cleanup pada linux kernel, debian linux +4 lainnya. Skor CVSS 3.1 4.4 (Medium) menurut NVD.

Deskripsi (NVD)

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

Rincian

Terbit di NVD

3 Maret 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.4 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-459: Incomplete Cleanup
CWE-401: Missing Release of Memory after Effective Lifetime

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c7... patch · advisory vendor
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de898782... patch · advisory vendor
• https://www.oracle.com/security-alerts/cpujul2022.html patch · advisory pihak ketiga
• https://bugzilla.redhat.com/show_bug.cgi?id=2025726 issue tracking · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html mailing list · advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5096 advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2021/11/25/1 exploit · mailing list · advisory pihak ketiga